most citedConformally flat manifolds with nonnegative Ricci curvature

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math.DG2004★ 1 cited

Conformally flat manifolds with nonnegative Ricci curvature

Gilles Carron, Marc Herzlich

We show that complete conformally flat manifolds of dimension n>2 with nonnegative Ricci curvature enjoy nice rigidity properties: they are either flat, or locally isometric to a p…

math.RA2003

Skew category, Galois covering and smash product of a -category

Claude Cibils, Eduardo N. Marcos

In this paper we consider categories over a commutative ring provided either with a free action or with a grading of a not necessarily finite group. We define the smash product cat…